sensors Mode-S transponder
4247D1
ICAO 24-bit transponder address · allocated to United Kingdom
Currently assigned to VP-CIX · BOEING 737 MAX 8
- Hex
- 4247D1
- Octal
- 20443721
- Decimal
- 4,343,761
- Country
- GB
- Tail
- VP-CIX
- Type
- B38M
- Flights observed
- 76
- Distinct callsigns
- 16
- Country
- GB
- Last broadcast
- 3h ago
Current position
Country allocation
The ICAO 24-bit address 4247D1 falls within the block assigned to United Kingdom (GB) by ICAO Annex 10, Volume III. Every aircraft registered in United Kingdom receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.
Callsign history 16 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| CAY794 | Cayman Airways | 13 | 2026-05-17 |
| CAY795 | Cayman Airways | 10 | 2026-05-17 |
| CAY200 | Cayman Airways | 7 | 2026-05-29 |
| CAY104 | Cayman Airways | 7 | 2026-05-27 |
| CAY440 | Cayman Airways | 6 | 2026-05-30 |
| CAY202 | Cayman Airways | 5 | 2026-05-25 |
| CAY441 | Cayman Airways | 4 | 2026-05-23 |
| CAY203 | Cayman Airways | 4 | 2026-05-25 |
| CAY201 | Cayman Airways | 4 | 2026-05-29 |
| CAY102 | Cayman Airways | 4 | 2026-05-13 |
| CAY852 | Cayman Airways | 3 | 2026-05-04 |
| CAY106 | Cayman Airways | 3 | 2026-05-21 |
| CAY103 | Cayman Airways | 3 | 2026-05-08 |
| CAY793 | Cayman Airways | 1 | 2026-05-28 |
| CAY792 | Cayman Airways | 1 | 2026-05-27 |
| CAY105 | Cayman Airways | 1 | 2026-05-20 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-30 | CAY440 | GCM → DEN | May 30, 02:45 UTC | May 30, 17:55 UTC | 15h 10m |
| 2026-05-29 | CAY201 | TPA → GCM | May 29, 19:35 UTC | May 30, 00:40 UTC | 5h 5m |
| 2026-05-29 | CAY200 | GCM → TPA | May 29, 01:10 UTC | May 29, 18:20 UTC | 17h 10m |
| 2026-05-28 | CAY793 | JFK → GCM | May 28, 15:30 UTC | May 28, 22:50 UTC | 7h 20m |
| 2026-05-27 | CAY792 | GCM → JFK | May 27, 19:40 UTC | May 28, 02:30 UTC | 6h 50m |
| 2026-05-27 | CAY104 | GCM → MIA | May 27, 17:05 UTC | May 27, 17:35 UTC | 30m |
| 2026-05-25 | CAY203 | TPA → GCM | May 25, 21:04 UTC | May 25, 21:54 UTC | 50m |
| 2026-05-25 | CAY202 | GCM → TPA | May 25, 15:30 UTC | May 25, 19:44 UTC | 4h 14m |
| 2026-05-24 | CAY203 | TPA → GCM | May 24, 20:40 UTC | May 25, 13:30 UTC | 16h 50m |
| 2026-05-24 | CAY202 | GCM → TPA | May 24, 15:15 UTC | May 24, 19:25 UTC | 4h 10m |
| 2026-05-23 | CAY441 | DEN → GCM | May 23, 20:25 UTC | May 24, 13:10 UTC | 16h 45m |
| 2026-05-23 | CAY440 | GCM → DEN | May 23, 03:10 UTC | May 23, 18:10 UTC | 15h 0m |
| 2026-05-22 | CAY201 | TPA → GCM | May 22, 19:50 UTC | May 23, 01:00 UTC | 5h 10m |
| 2026-05-22 | CAY200 | GCM → TPA | May 22, 01:15 UTC | May 22, 18:20 UTC | 17h 5m |
| 2026-05-21 | CAY106 | GCM → MIA | May 21, 22:20 UTC | May 21, 22:55 UTC | 35m |
| 2026-05-20 | CAY105 | MIA → GCM | May 20, 19:55 UTC | May 20, 20:20 UTC | 25m |
| 2026-05-20 | CAY104 | GCM → MIA | May 20, 17:15 UTC | May 20, 17:50 UTC | 35m |
| 2026-05-18 | CAY203 | TPA → GCM | May 18, 21:45 UTC | May 18, 22:30 UTC | 45m |
| 2026-05-18 | CAY202 | GCM → TPA | May 18, 15:45 UTC | May 18, 20:10 UTC | 4h 24m |
| 2026-05-17 | CAY795 | JFK → GCM | May 17, 19:45 UTC | May 18, 13:25 UTC | 17h 40m |
| 2026-05-17 | CAY794 | GCM → JFK | May 17, 13:55 UTC | May 17, 16:40 UTC | 2h 45m |
| 2026-05-16 | CAY794 | GCM → JFK | May 16, 20:20 UTC | May 17, 16:40 UTC | 20h 20m |
| 2026-05-16 | CAY794 | GCM → JFK | May 16, 20:00 UTC | May 17, 16:40 UTC | 20h 40m |
| 2026-05-16 | CAY200 | GCM → TPA | May 16, 01:45 UTC | May 16, 18:40 UTC | 16h 56m |
| 2026-05-15 | CAY201 | TPA → GCM | May 15, 19:50 UTC | May 15, 23:45 UTC | 3h 55m |
| 2026-05-15 | CAY200 | GCM → TPA | May 15, 17:35 UTC | May 15, 18:55 UTC | 1h 20m |
| 2026-05-14 | CAY200 | GCM → TPA | May 14, 21:10 UTC | May 15, 18:55 UTC | 21h 44m |
| 2026-05-14 | CAY202 | GCM → TPA | May 14, 15:35 UTC | May 14, 19:45 UTC | 4h 10m |
| 2026-05-13 | CAY102 | GCM → MIA | May 13, 20:25 UTC | May 14, 13:35 UTC | 17h 10m |
| 2026-05-13 | CAY104 | GCM → MIA | May 13, 17:35 UTC | May 13, 18:15 UTC | 40m |
| 2026-05-12 | CAY104 | GCM → MIA | May 12, 20:20 UTC | May 13, 18:15 UTC | 21h 55m |
| 2026-05-12 | CAY104 | GCM → MIA | May 12, 19:50 UTC | May 13, 18:15 UTC | 22h 25m |
| 2026-05-11 | CAY104 | GCM → MIA | May 11, 22:35 UTC | May 12, 17:45 UTC | 19h 11m |
| 2026-05-10 | CAY795 | JFK → GCM | May 10, 19:15 UTC | May 10, 21:49 UTC | 2h 35m |
| 2026-05-10 | CAY794 | GCM → JFK | May 10, 13:44 UTC | May 10, 16:20 UTC | 2h 35m |
| 2026-05-09 | CAY794 | GCM → JFK | May 9, 19:14 UTC | May 10, 16:20 UTC | 21h 5m |
| 2026-05-09 | CAY200 | GCM → TPA | May 9, 17:05 UTC | May 9, 18:05 UTC | 1h 0m |
| 2026-05-08 | CAY103 | MIA → GCM | May 8, 15:45 UTC | May 8, 16:15 UTC | 30m |
| 2026-05-07 | CAY203 | TPA → GCM | May 7, 20:40 UTC | May 8, 13:40 UTC | 17h 0m |
| 2026-05-07 | CAY202 | GCM → TPA | May 7, 15:20 UTC | May 7, 19:30 UTC | 4h 10m |
| 2026-05-07 | CAY102 | GCM → MIA | May 7, 13:05 UTC | May 7, 13:40 UTC | 35m |
| 2026-05-04 | CAY852 | GCM → PTY | May 4, 17:10 UTC | May 4, 21:20 UTC | 4h 11m |
| 2026-05-03 | CAY795 | JFK → GCM | May 3, 22:20 UTC | May 4, 21:20 UTC | 23h 1m |
| 2026-05-03 | CAY795 | JFK → GCM | May 3, 20:20 UTC | May 4, 17:35 UTC | 21h 15m |
| 2026-05-02 | CAY794 | GCM → JFK | May 2, 22:20 UTC | May 3, 16:30 UTC | 18h 9m |
| 2026-05-02 | CAY441 | DEN → GCM | May 2, 20:35 UTC | May 3, 16:30 UTC | 19h 54m |
| 2026-05-02 | CAY440 | GCM → DEN | May 2, 01:40 UTC | May 2, 18:00 UTC | 16h 20m |
| 2026-05-01 | CAY201 | TPA → GCM | May 1, 19:50 UTC | May 1, 23:45 UTC | 3h 55m |
| 2026-05-01 | CAY200 | GCM → TPA | May 1, 17:35 UTC | May 1, 18:35 UTC | 1h 0m |
| 2026-04-29 | CAY795 | JFK → GCM | Apr 29, 19:30 UTC | Apr 29, 22:05 UTC | 2h 35m |
About Mode-S
A Mode-S transponder code (also called an "ICAO 24-bit address" or "hex code") is a 6-character hexadecimal identifier permanently assigned to an aircraft when it's first registered. Unlike callsigns (which change with each flight) or registrations (which can change if an aircraft is sold internationally), the Mode-S address stays with the airframe for the life of the aircraft in that country.
Every ADS-B transmission from an aircraft includes its Mode-S address, making it the most reliable way to identify a specific airframe. Flight-tracking services like Apparatus use the Mode-S address as the primary key for tying position broadcasts, callsigns, and ownership records together.
Prefer a tail-number view? See the VP-CIX page for operator, model, and routing details .